Many Americans are having trouble finding a job these days. However, a new survey finds less than half of those still employed are satisfied with their jobs.

The Tuesday survey, conducted by the Conference Board research group, says just 45 percent of those surveyed are satisfied with their work. That's the lowest level ever recorded by the research group in more than 22 years of studying the issue.

Reasons for job dissatisfaction included:

Fewer workers consider their jobs interesting.

Incomes have not kept up with inflation.

The soaring cost of health insurance has eaten into workers' take-home pay.

Linda Barrington is the managing director of human capital at the Conference Board and one of the study's authors.

"It says something troubling about work in America," Barrington said of the findings. "It is not about the business cycle or one grumpy generation."

"What's really disturbing about growing job dissatisfaction is the way it can play into the competitive nature of the U.S. work force down the road and on the growth of the U.S. economy - all in a negative way," said Lynn Franco, another author of the report and director of the Conference Board's Consumer Research Center.

Dissatisfaction with the boss was another contributing factor to unhappiness on the job, with only 51 percent saying they were happy with their superiors.

Still, Barrington says workers share some of the responsibility for low job satisfaction.

"It is two-way responsibility," she said. "Workers also have to figure out what they should be doing to be the most engaged in their jobs and the most productive."

Worker dissatisfaction has been on the rise for more than two decades.